Today's "Woodstock for Capitalists" began with just a dozen attendees in 1965. Sixty years later, the Omaha, Nebraska gathering attracts as many as 40,000 people from around the world.

Anthropologists studying the cultural habits of a certain type of American investor could do no better than to join the thousands who make the annual pilgrimage to Omaha, Neb., where Warren Buffett's Berkshire Hathaway Inc.

Berkshire Hathaway investors are eager to hear CEO Warren Buffett hold forth at length about the company on Saturday. It may be one of the last such opportunities to do so.